CN203069530U - Optical fiber sensor system for detecting surface defects of steel ball - Google Patents
Optical fiber sensor system for detecting surface defects of steel ball Download PDFInfo
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- CN203069530U CN203069530U CN 201320066563 CN201320066563U CN203069530U CN 203069530 U CN203069530 U CN 203069530U CN 201320066563 CN201320066563 CN 201320066563 CN 201320066563 U CN201320066563 U CN 201320066563U CN 203069530 U CN203069530 U CN 203069530U
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- steel ball
- fibre bundle
- sensor system
- ball surface
- surface defect
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Abstract
The utility model particularly discloses an optical fiber sensor system for detecting surface defects of a steel ball. The optical fiber sensor system comprises a reflection type optical fiber sensor probe, an 820-nanometer light transmitter, a photoelectric converter, a signal processing integrated circuit board and a PC (Personal Computer), wherein the 820-nanometer light transmitter can provide a light source to the reflection type optical fiber sensor probe; the photoelectric converter receives 820-nanometer light and converts the light into an analog quantity voltage value; and the signal processing integrated circuit board is used for carrying out zeroing, wave defection, filtering, amplification and A/D (Analogue/Digital) conversion to collect data, and then sending the data to the PC to process. An optical fiber sensing technology is applied to detection of the surface quality of the steel ball so that real-time processing and automatic nondestructive testing of the surface quality of the steel ball are realized, and various defect parameters can be measured simultaneously.
Description
Technical field
The utility model relates to a kind of detection system, is a kind of fiber optic sensor system that detects steel ball surface defect specifically, especially can realize a kind of sensor number of drawbacks measurement.
Background technology
GB regulation steel ball surface quality comprises surface imperfection, three parameters of surfaceness and percent ripple.But the instrument that is used for the steel ball surface quality testing at present only can detect one of them parameter mostly, and measuring speed is very slow.To the method that extensively adopts microscope manual measurement or contourgraph to check in the surfaceness factory, efficient is very low; To the classic method of surface imperfection employing Manual Visual Inspection, the false drop rate height is perhaps introduced external steel ball surface defect automatic tester, and is expensive, and also only detects this parameter of surface imperfection.The blockade of the restriction of detection efficiency and external core technology causes domestic steel ball quality sorting to be inspected by random samples in proportion, has reduced the reliability of steel ball, and this has become the bottleneck that China's steel ball already develops.
The utility model content
In order to change the traditional detection device, the utility model provides a kind of and has taken full advantage of that reflection-type optical fibre sensor is simple in structure, the advantage of noncontact, Non-Destructive Testing, Fibre Optical Sensor is applied to the defects detection field, a kind of detection steel ball surface defect on-line detecting system accurately and efficiently is provided.
The technical solution adopted in the utility model is as follows:
A kind of fiber optic sensor system that detects steel ball surface defect, comprise reflection-type optical fibre sensor probe, nanometer optical transmitting set, photoelectric commutator, signal processing circuit and PC, described nanometer optical transmitting set provides light source for the reflection-type optical fibre sensor probe, the defective that the reflection-type optical fibre sensor probe is gathered steel ball surface, and the signal of gathering is sent to photoelectric commutator, described photoelectric commutator sends to signal processing circuit to the signal after changing, and the signal after signal processing circuit is handled sends to PC.
Described signal processing circuit comprises detecting circuit, filtering circuit, amplifying circuit and A/D change-over circuit, and they link to each other successively.
Described reflection-type optical fibre sensor probe comprises housing, collector lens and fibre bundle, described housing bottom is provided with collector lens, top at collector lens is provided with fibre bundle, described fibre bundle comprises the launching fiber bundle and receives fibre bundle, described launching fiber bundle and reception fibre bundle are the coaxial donut of multi-turn and arrange, the axle center is the launching fiber bundle, outwards is that paraxial heart termination is received fibre bundle, middle fibre bundle, the axis client reception fibre bundle far away of receiving successively by the axle center.
Described fibre bundle begins from the end to be fixed in the housing to the 80th millimeter.
Described fibre bundle end face is the sphere the same with steel ball curvature to be measured.
The bottom of described housing is provided with glass window.
Be provided with in described enclosure interior and tighten bayonet socket.
The numerical aperture of the intrafascicular single launching fiber of described launching fiber is 0.11; The numerical aperture of single reception optical fiber is 0.22 in the described reception fibre bundle.
Described reception fibre bundle has three circles, and they link to each other with 3 photoelectric commutators respectively.
The internal diameter of single optical fiber is 105 microns in the described fibre bundle; External diameter is 125 microns.
Described nanometer optical transmitting set is 820 nanometer optical transmitting sets.
The launching fiber of described reflection-type optical fibre sensor probe links to each other with 820 nanometer optical transmitting sets.
Described reflection-type optical fibre sensor probe has three circle reception fibre bundles to link to each other with three photoelectric commutators respectively, and photoelectric commutator is the photaesthesia of 820 nanometers to wavelength, and a circle receives the corresponding photoelectric commutator of optical fiber.
The use of this system: provide steel ball by auxiliary feedway, the steel ball that sorting mechanism preliminary screening size is qualified, under the gravity effect, steel ball rolls along raceway and glides, and support wheel lifts and enters expanding unit, and expanding unit adopts the meridian expansion mode, formed by driving wheel, expanding wheel, support wheel, expanding wheel is an asymmetric taper roller, makes steel ball produce centering and scratches, can fully steel ball surface be launched fully.The reflection-type optical fibre sensor probe is fixed on over against sphere center position, the tested steel ball surface of distance is 1500 microns, the probe mounting position, can guarantee near-end reception optical fiber and the middle signal ratio that receives optical fiber in range of linearity zone, it is the most responsive to the roughness detection to guarantee that again far-end receives optical fiber.
It is luminous that 820 nanometer optical transmitting sets satisfy job requirement, be radiated at steel ball surface to be measured through the launching fiber conduction, expanding unit makes the passive rotation of steel ball, reflection-type optical fibre sensor scanning probe steel ball surface, owing to the irregular reason light of sphere reflects and diffuse reflection at steel ball surface generation minute surface, intensity signal after the emission is received the fibre bundle collection by three circles, the light signal strength that the reception fibre bundle collects is with receiving fibre bundle and tested surface distance dependent, the reception fibre bundle of different circles sends to light signal photoelectric commutator respectively and divides three the tunnel to carry out opto-electronic conversion, three road electric signal are handled detection by three cover circuit respectively, filtering, amplification and A/D conversion image data send to PC.
PC is handled the voltage signal that collects, proximal ends is received signal and indirect collects mail and number gets ratio with the elimination noise, carry out the twin-beam compensation, ratio digital signal and remote digital signal are arranged according to steel ball expansion trajectory path respectively, the steel ball surface shape characteristic just can recover so, the normal steel ball surface that forms is the sphere dot matrix of rule, and for rejected region, entanglement can take place in lattice information, just can judge defect type in conjunction with the roughness features of dot matrix entanglement degree and scope and remote digital signal formation, flaw size and defect rank; After information acquisition was finished, PC was judged quality to steel ball, and expanding wheel lifts, and the steel ball of different Level falls into different raceways, and check finishes.
The beneficial effects of the utility model are:
This sensing system judges that by traditional detection of reflected rate the defective existence is embodied as from this Several Parameters comprehensive evaluation defective of surperficial concave defect, surperficial protruding defective and surface reflectivity defective, realizes the quantification to surface defects detection on steel ball surface defect detects.Surface concave defect, surperficial protruding defective have reflected the variation of displacement, the surface imperfection reflectivity has reflected the variation of surface roughness, and then binding deficient length, width and number of defects sort out steel ball surface defect, judges to belong to which kind of defective and defect rank.
When the variation to single displacement or reflectivity detects, measure than being easier to, when these two parameters change simultaneously, the light intensity variation tendency that they cause can be superimposed, Overlay occurs uncertain, therefore must realize the separation and Extraction of displacement and roughness, this novel light beam comparative measurement method of having taked, the receiving light power that receives the different circles of fibre bundle is compared, ratio be only with the function of different circle fiber end faces to the distance dependent of reflecting body, and with the size of light intensity, factors such as the roughness of reflecting body and fiber transmission attenuation are irrelevant, therefore this method is by the influence of the reflectivity that can disappear, thereby the displacement information in the extraction defect characteristic accurately detects this compound defective.The coaxial optical fiber outmost turns receive fibre bundle from the launching fiber bundle away from, least responsive to change in displacement, and the most responsive to reflectance varies, can be used to measure degree of roughness.It is too fast that the light that collector lens can make launching fiber send is unlikely to spread, and is similar to think lambert's light-emitting area.Glass window shields, and luminous energy is accessible passes through with reflection to make emergent light.
The reflection-type optical fibre sensor probe judges that by traditional detection of reflected rate the defective existence is embodied as from the surface imperfection degree of depth, surface imperfection height and surface imperfection reflectivity multiparameter evaluation defective, realizes the quantification to surface defects detection on steel ball surface defect detects in addition.The surface imperfection degree of depth, surface imperfection height have reflected the variation of displacement, the surface imperfection reflectivity has reflected the variation of surface roughness, and then binding deficient length, width and number of defects sort out steel ball surface defect, judges to belong to which kind of defective and defect rank.
Optical fiber sensing technology is applied in the steel ball surface quality testing, has realized real-time processing and the robotization Non-Destructive Testing of steel ball surface quality, and can measure the number of drawbacks parameter simultaneously.
Description of drawings
Fig. 1 is the system chart that reflection-type optical fibre sensor detects steel ball surface defect;
Fig. 2 is the analog signal processing circuit block diagram;
Fig. 3 is the sensor probe synoptic diagram;
Fig. 4 is the Fibre Optical Sensor schematic appearance;
Fig. 5 is the synoptic diagram of fiber-optic sensor probe longitudinal profile and steel ball surface correspondence;
1.820 nanometer optical transmitting sets among the figure, 2. reflection-type optical fibre sensor probe, 3. steel ball to be measured, 4. photoelectric commutator, 5. signal processing circuit, 6.PC machine, 7. detecting circuit, 8. filtering circuit, 9. amplifying circuit, 10.A/D change-over circuit, 11. the launching fiber bundle, 12. paraxial heart terminations are received fibre bundle, the 13. middle fibre bundles that receive, 14. axle head far away receives fibre bundle, 15. housings, 16. collector lenses, 17. glass window, 18, the fibre bundle end face, 19, steel ball surface.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As Fig. 1,2,3,4, shown in 5, detect the fiber optic sensor system of steel ball surface defect, comprise reflection-type optical fibre sensor probe 2,820 nanometer optical transmitting sets 1, photoelectric commutator 4, signal processing circuit 5 and PC 6, described 820 nanometer optical transmitting sets 1 provide light source for reflection-type optical fibre sensor probe 2, the defective that reflection-type optical fibre sensor probe 2 is gathered the steel ball surface 19 of steel ball 3 to be measured, and the signal of gathering is sent to photoelectric commutator 4, described photoelectric commutator 4 sends to signal processing circuit 5 to the signal after changing, and the signal after signal processing circuit 5 is handled sends to PC 6.
Described signal processing circuit 5 comprises detecting circuit 7, filtering circuit 8, amplifying circuit 9 and A/D change-over circuit 10, and they link to each other successively.
Described reflection-type optical fibre sensor probe 2 comprises housing 15, collector lens 16 and fibre bundle, housing 15 bottoms are provided with collector lens 16, top at collector lens 16 is provided with fibre bundle, fibre bundle comprises launching fiber bundle 11 and receives fibre bundle, launching fiber bundle 11 and reception fibre bundle are the coaxial donut of multi-turn and arrange, the axle center is launching fiber bundle 11, outwards is that paraxial heart termination is received fibre bundle 12, middle fibre bundle 13, the far-end reception fibre bundle 14 of receiving successively by the axle center.The bottom of housing 15 is provided with glass window 17.Housing 15 inside are provided with tightens bayonet socket.The fibre bundle end face is corresponding with collector lens 16.The numerical aperture of single launching fiber is 0.11.The numerical aperture of single reception optical fiber is 0.22, and fibre bundle end face 18 is the same with the curvature of steel ball surface 19 to be measured as shown in Figure 3.Described reception fibre bundle has three circles, they link to each other with 3 photoelectric commutators 4 respectively, the photaesthesia that 4 pairs of wavelength of photoelectric commutator are 820 nanometers, three photoelectric commutators 4 overlap independently with signal processing integrated circuit plate 5 inside three, and Circuits System links to each other, signal processing integrated circuit plate 5 is handled signal and is gathered and send to PC 6, by PC 6 synthetic determinations, draw defect situation.
The internal diameter of single optical fiber is 105 microns in the fibre bundle; External diameter is 125 microns.
The concrete course of work of system is, 820 nanometer optical transmitting sets satisfy job requirement and launch 820 nanometer light, be radiated at steel ball surface 19 to be measured through the launching fiber conduction, owing to the irregular reason light of sphere at steel ball surface 19 minute surface reflection and diffuse reflection takes place, intensity signal is received the fibre bundle collection by three circles, the light signal strength that the reception fibre bundle collects is with receiving fibre bundle and tested surface distance dependent, the reception fibre bundle of different circles sends to light signal photoelectric commutator respectively and carried out opto-electronic conversion in 4 minutes three the tunnel, three road electric signal are handled detection by three cover circuit respectively, filtering, signal after amplification and A/D change-over circuit 10 will be changed sends to PC 6.The concrete processing procedure of 6 pairs of signals of PC is, reflection-type optical fibre sensor probe 2 scanning steel ball surfaces 19, its track while scan curved path is fixed, steel ball 3 to be measured is the spheroids of symmetry fully, which point begins scanning to all not influences of result from steel ball surface 19, so PC 6 is gathered signal sequences and also met the scanning probe sequencing fully.So arrange the information that collects according to the track while scan route, just can form the three-dimensional appearance feature, so just can reflect defect length and width.
What sensing system was used is optical fiber sensing technology, and steel ball surface 19 defectives are detected.
The reflection-type optical fibre sensor probe that sensing system adopts is special, and steel ball surface 19 is curved surface in order to detect steel ball surface 19 designs, and fibre bundle end face 18 is designed to the curved surface of same curvature, is beneficial to luminosity compensation and calculates.
Sensing system adopts a branch of launching fiber three circles to receive fibre bundles, to three road light intensity signals respectively treatment conversion be voltage signal, and the two-way voltage after handling is got ratio, carry out the twin-beam compensation.
Sensing system can be with displacement defective and surface reflectivity defective separation and Extraction, to the defect information Comprehensive Assessment.
It is the light source of 820 nanometers that sensing system adopts wavelength, and the interference that can effectively eliminate extraneous visible parasitic light increases accuracy in detection.
Sensing system can be steel ball surface 19 three-dimensional appearance features with the signal integration that extracts, and intuitively reflects defect length and defective width and defective number.
Claims (10)
1. fiber optic sensor system that detects steel ball surface defect, comprise reflection-type optical fibre sensor probe, nanometer optical transmitting set, photoelectric commutator, signal processing circuit and PC, described nanometer optical transmitting set provides light source for the reflection-type optical fibre sensor probe, the defective that the reflection-type optical fibre sensor probe is gathered steel ball surface, and the signal of gathering is sent to photoelectric commutator, described photoelectric commutator sends to signal processing circuit to the signal after changing, and the signal after signal processing circuit is handled sends to PC.
2. a kind of fiber optic sensor system that detects steel ball surface defect as claimed in claim 1, it is characterized in that: described signal processing circuit comprises detecting circuit, filtering circuit, amplifying circuit and A/D change-over circuit, they link to each other successively.
3. a kind of fiber optic sensor system that detects steel ball surface defect as claimed in claim 1, it is characterized in that: described reflection-type optical fibre sensor probe comprises housing, collector lens and fibre bundle, described housing bottom is provided with collector lens, top at collector lens is provided with fibre bundle, described fibre bundle comprises the launching fiber bundle and receives fibre bundle, described launching fiber bundle and reception fibre bundle are the coaxial donut of multi-turn and arrange, the axle center is the launching fiber bundle, outwards is that paraxial heart termination is received fibre bundle successively by the axle center, the middle fibre bundle that receives, axis client far away receives fibre bundle.
4. a kind of fiber optic sensor system that detects steel ball surface defect as claimed in claim 3, it is characterized in that: described fibre bundle begins from the end to be fixed in the housing to the 80th millimeter.
5. a kind of fiber optic sensor system that detects steel ball surface defect as claimed in claim 3, it is characterized in that: described fibre bundle end face is the sphere the same with steel ball curvature to be measured.
6. a kind of fiber optic sensor system that detects steel ball surface defect as claimed in claim 3, it is characterized in that: the bottom of described housing is provided with glass window.
7. a kind of fiber optic sensor system that detects steel ball surface defect as claimed in claim 3 is characterized in that: be provided with in described enclosure interior and tighten bayonet socket.
8. a kind of fiber optic sensor system that detects steel ball surface defect as claimed in claim 3, it is characterized in that: the numerical aperture of the intrafascicular single launching fiber of described launching fiber is 0.11; The numerical aperture of single reception optical fiber is 0.22 in the described reception fibre bundle; The internal diameter of single optical fiber is 105 microns in the described fibre bundle; External diameter is 125 microns.
9. a kind of fiber optic sensor system that detects steel ball surface defect as claimed in claim 3 is characterized in that: the launching fiber of described reflection-type optical fibre sensor probe links to each other with the nanometer optical transmitting set.
10. a kind of fiber optic sensor system that detects steel ball surface defect as claimed in claim 3, it is characterized in that: described reception fibre bundle has three circles, and they link to each other with three photoelectric commutators respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320066563 CN203069530U (en) | 2013-02-05 | 2013-02-05 | Optical fiber sensor system for detecting surface defects of steel ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320066563 CN203069530U (en) | 2013-02-05 | 2013-02-05 | Optical fiber sensor system for detecting surface defects of steel ball |
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| CN203069530U true CN203069530U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320066563 Expired - Fee Related CN203069530U (en) | 2013-02-05 | 2013-02-05 | Optical fiber sensor system for detecting surface defects of steel ball |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091336A (en) * | 2013-02-05 | 2013-05-08 | 济南大学 | Optical fiber sensor system for detecting defect on surface of steel ball |
| CN106345705B (en) * | 2016-09-30 | 2019-06-18 | 宁波百加百测控设备有限公司 | A kind of piano plate screening installation |
-
2013
- 2013-02-05 CN CN 201320066563 patent/CN203069530U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091336A (en) * | 2013-02-05 | 2013-05-08 | 济南大学 | Optical fiber sensor system for detecting defect on surface of steel ball |
| CN106345705B (en) * | 2016-09-30 | 2019-06-18 | 宁波百加百测控设备有限公司 | A kind of piano plate screening installation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20150205 |
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| EXPY | Termination of patent right or utility model |